#include "apue.h"
#include <sys/wait.h>

static void sig_int(int); /* our signal-catchhing function */

int main(void){
	char buf[MAXLINE];
	pid_t pid;
	int status;

	if(signal(SIGINT, sig_int) == SIG_ERR)
		err_sys("signal error");

	printf("%% ");
	while(fgets(buf, MAXLINE, stdin) != NULL){
		if(buf[strlen(buf) - 1] == '\n')
			buf[strlen(buf) - 1] = 0;
		if((pid = fork()) < 0){
			err_sys("fork error");
		}else if(pid == 0){
			execlp(buf, buf, (char *)0);
			err_ret("couldn't execute: %s", buf);
			exit(127);
		}

		if((pid = waitpid(pid, &status, 0)) < 0)
			err_sys("waitpid error");
		printf("%% ");
	}
	exit(0);
}

void sig_int(int signo){
	printf("interrupt\n%% ");
}
